--- a/arch/mips/ath79/gpio.c
+++ b/arch/mips/ath79/gpio.c
@@ -146,7 +146,8 @@ static void __iomem *ath79_gpio_get_func
 	if (soc_is_ar71xx() ||
 	    soc_is_ar724x() ||
 	    soc_is_ar913x() ||
-	    soc_is_ar933x())
+	    soc_is_ar933x() ||
+	    soc_is_qca955x())
 		reg = AR71XX_GPIO_REG_FUNC;
 	else if (soc_is_ar934x() ||
 		 soc_is_qca953x() || soc_is_qca956x())
@@ -185,15 +186,27 @@ void __init ath79_gpio_output_select(uns
 {
 	void __iomem *base = ath79_gpio_base;
 	unsigned long flags;
-	unsigned int reg;
+	unsigned int reg, reg_base;
+	unsigned long gpio_count;
 	u32 t, s;
 
-	BUG_ON(!soc_is_ar934x() && !soc_is_qca953x());
+	if (soc_is_ar934x()) {
+		gpio_count = AR934X_GPIO_COUNT;
+		reg_base = AR934X_GPIO_REG_OUT_FUNC0;
+	} else if (soc_is_qca953x()) {
+		gpio_count = QCA953X_GPIO_COUNT;
+		reg_base = QCA953X_GPIO_REG_OUT_FUNC0;
+	} else if (soc_is_qca955x()) {
+		gpio_count = QCA955X_GPIO_COUNT;
+		reg_base = QCA955X_GPIO_REG_OUT_FUNC0;
+	} else {
+		BUG();
+	}
 
-	if (gpio >= AR934X_GPIO_COUNT)
+	if (gpio >= gpio_count)
 		return;
 
-	reg = AR934X_GPIO_REG_OUT_FUNC0 + 4 * (gpio / 4);
+	reg = reg_base + 4 * (gpio / 4);
 	s = 8 * (gpio % 4);
 
 	spin_lock_irqsave(&ath79_gpio_lock, flags);